CSI: Miami Episode 7.09 Power Trip

When a young co-ed is found electrocuted with her pupils fully dilated, making her blinded by light and unable to fight back, the team suspects it's the work of a killer from a year ago. Suspicion falls on the ophthalmologist who was the lead suspect in the first murder case, but when the detective, Reggie Mastow, who worked the first case and has since been put on restrictive duty for assaulting the ophthalmologist, becomes hell-bent on pinning the murder on the ophthalmologist and interferes with the team's investigation, the team questions if he's trying to deter the case because he's the killer. In order to prove who the real killer is, the team uses technology on overlapping prints that didn't exist a year ago when the first murder took place.